Reliable water vapour isotopic composition measurements at low humidity using frequency-stabilised cavity ring-down spectroscopy
Abstract ppmv, the instrument demonstrates a precision of 0.01 ‰ and 0.1 ‰ in δ 18 O and d-excess, respectively, for an integration time of 2 min. This set-up yields an isotopic composition precision below 1 ‰ at water mixing ratios down to 4 ppmv, which suggests an extrapolated precision in δ 18 O of 1.5 ‰ at 1 ppmv. Indeed, thanks to the stabilisation of the laser by the VCOF, the instrument exhibits extremely low drift and very high signal-to-noise ratio. The instrument is not hindered by a strong isotope–humidity response which at low humidity can create extensive biases on commercial instruments.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Reliable water vapour isotopic composition measurements at low humidity using frequency-stabilised cavity ring-down spectroscopy ; volume:17 ; number:15 ; year:2024 ; pages:4599-4612 ; extent:14
Atmospheric measurement techniques ; 17, Heft 15 (2024), 4599-4612 (gesamt 14)
- Urheber
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Casado, Mathieu
Landais, Amaelle
Stoltmann, Tim
Chaillot, Justin
Daëron, Mathieu
Prié, Fréderic
Bordet, Baptiste
Kassi, Samir
- DOI
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10.5194/amt-17-4599-2024
- URN
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urn:nbn:de:101:1-2408150438240.003665425924
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 10:50 MESZ
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Beteiligte
- Casado, Mathieu
- Landais, Amaelle
- Stoltmann, Tim
- Chaillot, Justin
- Daëron, Mathieu
- Prié, Fréderic
- Bordet, Baptiste
- Kassi, Samir
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